Joined: Feb 2012
Posts: 19,353
Likes: 5,471
From: Rochester, NY
Bikes: Stewart S&S coupled sport tourer, Stewart Sunday light, Stewart Commuting, Stewart Touring, Co Motion Tandem, Stewart 3-Spd, Stewart Track, Fuji Finest, Mongoose Tomac ATB, GT Bravado ATB, JCP Folder, Stewart 650B ATB
All a contact O ring will do WRT intrusion is to reduce the size of the grit getting in. and reduce the water getting out. Water reduces mountains and cuts through rock so a seal is little long term protection, hence my periodic maintenance commit. If the o ring is in contact/compression it will add steering friction but this too will reduce over time. Andy
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AndrewRStewart